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    Sorbic Acid & Sorbates
    Potassium Citrate
    Chemical Name: Mono-hydrous trisodium 2-hydroxy propane-1,2,3-tricarboxylate potassium citrate.
    Molecular Formula: C6H5K3O7
    Molecular Weight: 324.41
    Properties: White crystal or powder; odourless; taste salty; slightly deliquescence; readily soluble in water or glycerine, almost insoluble in ethanol (Relative density 1.98, it will melt and decompose when heated to 230℃) .
    Quality standard: GB14889-94, BP93/98, E332
    Application: In food processing industry, it is used as buffer agent, chelate agent, stabilizer, antibiotic oxidizer, emulsifier, flavor regluator, used in dairy product, jellies, jam, meat, tinned pastry. Used as emulsifier in cheese and used in citrus freshening. In pharmaceutical, it is used for curing hypokalimia, potassium depletion and alkalization of urine.
    Packing: It is packed with polyethylene bag as liner and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.
    Storage and transport: Kept in tightly-closed containers, it should be stored in a dry and ventilative warehouse, kept away from moisture and hot. Furthermore, it should be separately from poisonous substances. Handled with care, so as to avoid damage to bags.
    Index item GB14889-94 BP93/98 E332
    Appearance White, hygroscopic, granular powder or transparent crystals
    Identity test Positive tests for citrate and for potassium
    Appearance   Clear and colourless  
    Content(in dry basis),% ≥99.0 99.0-101.0 ≥99.0
    Chloride ≤ppm -- 50 --
    Heavy metal(in lead)≤ppm 10 10 5
    Sodium,≤% 0.3 --
    Oxalate,≤% -- 0.03 0.01
    Sulfate,≤% -- 0.15 --
    Acidity and alkalinity passed testing Passes test --
    Readily carbonizable substance -- Not deeper than standard --
    Loss on drying(180℃,4h) 3.0-6.0 4.0-7.0 ≤6%
    PH range(5% transparent solvent) --   7.5-9.0
    Arsenic,≤ppm 3 1
    Lead,≤ppm -- -- 1
    Mercury,≤ppm -- 1
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